TY - JOUR
T1 - High-velocity Impact Location on Aircraft panels Using Macro-fiber Composite piezoelectric Rosettes
AU - Ajovalasit, Augusto
AU - D'Acquisto, Leonardo
AU - Salamone, Salvatore
AU - Rhymer, Jennifer
AU - Lanza Di Scalea, Francesco
AU - Kim, Hyonny
AU - Lanza Di Scalea, Francesco
AU - Bartoli, Ivan
PY - 2010
Y1 - 2010
N2 - In this article, an approach based on an array of macro-fiber composite (MFC)transducers arranged as rosettes is proposed for high-velocity impact location on isotropic andcomposite aircraft panels. Each rosette, using the directivity behavior of three MFC sensors,provides the direction of an incoming wave generated by the impact source as a principalstrain angle. A minimum of two rosettes is sufficient to determine the impact location byintersecting the wave directions. The piezoelectric rosette approach is easier to implement thanthe well-known time-of-flight-based triangulation of acoustic emissions because it does notrequire knowledge of the wave speed in the material. Hence, the technique does not have thedrawbacks of time-of-flight triangulation associated to anisotropic materials or tapered sections.The experiments reported herein show the applicability of the technique to high-velocityimpacts created with a gas-gun firing spherical ice projectiles.
AB - In this article, an approach based on an array of macro-fiber composite (MFC)transducers arranged as rosettes is proposed for high-velocity impact location on isotropic andcomposite aircraft panels. Each rosette, using the directivity behavior of three MFC sensors,provides the direction of an incoming wave generated by the impact source as a principalstrain angle. A minimum of two rosettes is sufficient to determine the impact location byintersecting the wave directions. The piezoelectric rosette approach is easier to implement thanthe well-known time-of-flight-based triangulation of acoustic emissions because it does notrequire knowledge of the wave speed in the material. Hence, the technique does not have thedrawbacks of time-of-flight triangulation associated to anisotropic materials or tapered sections.The experiments reported herein show the applicability of the technique to high-velocityimpacts created with a gas-gun firing spherical ice projectiles.
KW - acoustic emissions.
KW - impact location
KW - macro-fiber composite
transducers
KW - structural health monitoring
KW - acoustic emissions.
KW - impact location
KW - macro-fiber composite
transducers
KW - structural health monitoring
UR - http://hdl.handle.net/10447/50898
M3 - Article
VL - 21
SP - 887
EP - 896
JO - Journal of Intelligent Material Systems and Structures
JF - Journal of Intelligent Material Systems and Structures
SN - 1045-389X
ER -